Amazon.com: Customer reviews: Levi's Men's 514 Straight Jean, Sultan - Advanced stretch, 30W x 32L
Levi's New Performance Line Adapts to Hot and Cold – Sourcing Journal
Amazon.com: Customer reviews: Levi's Men's 510 Slim Fit Jeans (Regular and Big & Tall), Castilleja White-Advanced Stretch (Waterless), 36W x 36L